Wall



` May 17, 1938. G, H, ELUS 2,117,763

WALL

Filed May 1'?, 1937 INVENTOR.

GEO/PGE ELL/5 BY 094.01: WwamL P atented May 17, 1938 WALL George H. Ellis, New Brighton, Minn., assignor to The Insolite Company, Minneapolis, Minn., a corporation of Minnesota.

Application May 17, 1937, serial No. 142,962

3 Claims.

This invention relates to the'art of building and the primary object is to provide an improved construction of walls and the like, wherein the plaster is carried by a base material, which, in'

turn, is carried or supported by studding or other rigid means forming the central portion of the wall.

Another object is to provide a substantially air tight jointed plaster base that is moisture and vapor proof, the same consisting of a series of slabs, panels or boards having a water-proof coating upon the surface to which the plaster is applied.

Further and more specific objects will be disclosed in the course of the following specification, reference being had to the accompanying drawing wherein:

Figure 1 is a view of the plaster base material provided with a water-proof coating on one face.

Figure 2 is a sectional view with parts broken away of the improved wall construction.

Figure 3 is a view of the plaster base material provided with a water-proofing coat on one face and a vapor seal on the opposite face.

Figure 4 is a sectional view of a wall structure in which the vapor and moisture proof plaster base is used.

In air conditioned buildings much dilculty has been experienced in the passing of moisture from the interior of the building and condensing in the air spaces. In cold weather this condensate freezes and forms a coating of ice..on the inner surfaces or the air spaces. By the use of this invention this undesirable condition cannot occur.

'I'he slabs or panels forming the plaster receiving base, to give satisfactory results must remain closed at all times and particularly during plastering.' If plaster enters the joint during plastering the joint will remain open and the air seal is broken and moisture and vapors are easily transmitted to the air spaces in the wall. The 'joints occurring between the supporting members should be so arranged that they will remain closed at all times.

Referring to the drawing in detail I is represented studding or other supporting members to which are secured sheathing Il, which forms at least a part of the outer wall of a building. Secured to the studding is plaster base material 13. The plaster base material may be in the Aform of an insulatingboard or slab. Vegetable fiber board, gypsum board and the like have given highly satisfactory results.

The plaster base material should be provided with relatively tight joints and-an air tight joint of the form of an overlapping arrangement gives excellent results. Overlapping joints l4,may `be used but it is to be understood that other types of joints may be resorted to as long as a tight joint is provided. To prevent opening of the joints during plastering, suitable means is provided for locking the joints. A very satisfactory means `of accomplishing this is by securing to one slab a rigid means I5, which extends across the joint and contacts the adjacent slab.

The surface of the base material which receives the plaster, is coated with water-proofing material and preferably with a water-prooiing material that increases the bonding of the plaster. Among the water-proofing materials that have given satisfactory results are asphalt, asphaltum, tar, pitch, gloss oil and the like. The waterproofing material prevents moisture from entering the plaster base material I3.

For the most eflicient results the surfaces of the base material facing the air spaces should be provided with a vapor seal I8. Foil, aqueous solutions of metallic substances, latex and nonmetallic mineral material have given highly satisfactory results as a vapor seal.

f It is to be understood that many variations and modifications may be made that fall within the scope of the invention. 'I'he water-proong and vapor-proofing materials mentioned have given excellent results but it is to be understood that any material may be used which gives a water-proof coating on the plaster receiving face and a vapor-seal on the opposite face.

What I claim is:

l. A building wall construction comprising supporting members, and slabs of porous plaster receiving material secured thereto withtheir rear faces coated with vapor-proofing material and facing hollow wall spaces between the supporting members, the plaster receiving faces coated with water-proofing material, and joints lof the base material locked against opening during plastering.

, 2. A building wall construction comprising supporting members, and porous plaster receiving material secured thereto with their rear faces coated with metallic vapor-proofing material. the plaster receiving faces coated with waterproofing material, and the joints of face material locked against opening by applied plastering pressure.

3. A building wall construction comprising supporting members, and slabs of plaster-receiving material secured thereto with their rear faces substantially completely covered with thin foil vapor-proofing material and facing hollow wall spaces between the supporting members', theplaster-receiving faces coated with `water-prooff ing material, and the joints locked against opening during plastering.

GEORGE H. ELLIS. 

